From af9f0be36cd412442a801d25bd5dd9459d691d0b Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Wed, 6 Nov 2019 12:23:40 +0100 Subject: dp8393x: put the DMA buffer in the state structure MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move it from the stack. It's only 24 bytes, and this simplifies the dp8393x_get()/ dp8393x_put() interface. Signed-off-by: Laurent Vivier Reviewed-by: Hervé Poussineau Message-Id: <20191106112341.23735-2-laurent@vivier.eu> --- hw/net/dp8393x.c | 105 ++++++++++++++++++++++++++----------------------------- 1 file changed, 50 insertions(+), 55 deletions(-) (limited to 'hw') diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index 693e244ce6..85d3f3788e 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -171,6 +171,7 @@ typedef struct dp8393xState { /* Temporaries */ uint8_t tx_buffer[0x10000]; + uint16_t data[12]; int loopback_packet; /* Memory access */ @@ -224,26 +225,25 @@ static uint32_t dp8393x_wt(dp8393xState *s) return s->regs[SONIC_WT1] << 16 | s->regs[SONIC_WT0]; } -static uint16_t dp8393x_get(dp8393xState *s, int width, uint16_t *base, - int offset) +static uint16_t dp8393x_get(dp8393xState *s, int width, int offset) { uint16_t val; if (s->big_endian) { - val = be16_to_cpu(base[offset * width + width - 1]); + val = be16_to_cpu(s->data[offset * width + width - 1]); } else { - val = le16_to_cpu(base[offset * width]); + val = le16_to_cpu(s->data[offset * width]); } return val; } -static void dp8393x_put(dp8393xState *s, int width, uint16_t *base, int offset, +static void dp8393x_put(dp8393xState *s, int width, int offset, uint16_t val) { if (s->big_endian) { - base[offset * width + width - 1] = cpu_to_be16(val); + s->data[offset * width + width - 1] = cpu_to_be16(val); } else { - base[offset * width] = cpu_to_le16(val); + s->data[offset * width] = cpu_to_le16(val); } } @@ -267,7 +267,6 @@ static void dp8393x_update_irq(dp8393xState *s) static void dp8393x_do_load_cam(dp8393xState *s) { - uint16_t data[8]; int width, size; uint16_t index = 0; @@ -277,13 +276,13 @@ static void dp8393x_do_load_cam(dp8393xState *s) while (s->regs[SONIC_CDC] & 0x1f) { /* Fill current entry */ address_space_rw(&s->as, dp8393x_cdp(s), - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0); - s->cam[index][0] = dp8393x_get(s, width, data, 1) & 0xff; - s->cam[index][1] = dp8393x_get(s, width, data, 1) >> 8; - s->cam[index][2] = dp8393x_get(s, width, data, 2) & 0xff; - s->cam[index][3] = dp8393x_get(s, width, data, 2) >> 8; - s->cam[index][4] = dp8393x_get(s, width, data, 3) & 0xff; - s->cam[index][5] = dp8393x_get(s, width, data, 3) >> 8; + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 0); + s->cam[index][0] = dp8393x_get(s, width, 1) & 0xff; + s->cam[index][1] = dp8393x_get(s, width, 1) >> 8; + s->cam[index][2] = dp8393x_get(s, width, 2) & 0xff; + s->cam[index][3] = dp8393x_get(s, width, 2) >> 8; + s->cam[index][4] = dp8393x_get(s, width, 3) & 0xff; + s->cam[index][5] = dp8393x_get(s, width, 3) >> 8; DPRINTF("load cam[%d] with %02x%02x%02x%02x%02x%02x\n", index, s->cam[index][0], s->cam[index][1], s->cam[index][2], s->cam[index][3], s->cam[index][4], s->cam[index][5]); @@ -295,8 +294,8 @@ static void dp8393x_do_load_cam(dp8393xState *s) /* Read CAM enable */ address_space_rw(&s->as, dp8393x_cdp(s), - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0); - s->regs[SONIC_CE] = dp8393x_get(s, width, data, 0); + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 0); + s->regs[SONIC_CE] = dp8393x_get(s, width, 0); DPRINTF("load cam done. cam enable mask 0x%04x\n", s->regs[SONIC_CE]); /* Done */ @@ -307,20 +306,19 @@ static void dp8393x_do_load_cam(dp8393xState *s) static void dp8393x_do_read_rra(dp8393xState *s) { - uint16_t data[8]; int width, size; /* Read memory */ width = (s->regs[SONIC_DCR] & SONIC_DCR_DW) ? 2 : 1; size = sizeof(uint16_t) * 4 * width; address_space_rw(&s->as, dp8393x_rrp(s), - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0); + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 0); /* Update SONIC registers */ - s->regs[SONIC_CRBA0] = dp8393x_get(s, width, data, 0); - s->regs[SONIC_CRBA1] = dp8393x_get(s, width, data, 1); - s->regs[SONIC_RBWC0] = dp8393x_get(s, width, data, 2); - s->regs[SONIC_RBWC1] = dp8393x_get(s, width, data, 3); + s->regs[SONIC_CRBA0] = dp8393x_get(s, width, 0); + s->regs[SONIC_CRBA1] = dp8393x_get(s, width, 1); + s->regs[SONIC_RBWC0] = dp8393x_get(s, width, 2); + s->regs[SONIC_RBWC1] = dp8393x_get(s, width, 3); DPRINTF("CRBA0/1: 0x%04x/0x%04x, RBWC0/1: 0x%04x/0x%04x\n", s->regs[SONIC_CRBA0], s->regs[SONIC_CRBA1], s->regs[SONIC_RBWC0], s->regs[SONIC_RBWC1]); @@ -417,7 +415,6 @@ static void dp8393x_do_receiver_disable(dp8393xState *s) static void dp8393x_do_transmit_packets(dp8393xState *s) { NetClientState *nc = qemu_get_queue(s->nic); - uint16_t data[12]; int width, size; int tx_len, len; uint16_t i; @@ -429,18 +426,17 @@ static void dp8393x_do_transmit_packets(dp8393xState *s) size = sizeof(uint16_t) * 6 * width; s->regs[SONIC_TTDA] = s->regs[SONIC_CTDA]; DPRINTF("Transmit packet at %08x\n", dp8393x_ttda(s)); - address_space_rw(&s->as, - dp8393x_ttda(s) + sizeof(uint16_t) * width, - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0); + address_space_rw(&s->as, dp8393x_ttda(s) + sizeof(uint16_t) * width, + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 0); tx_len = 0; /* Update registers */ - s->regs[SONIC_TCR] = dp8393x_get(s, width, data, 0) & 0xf000; - s->regs[SONIC_TPS] = dp8393x_get(s, width, data, 1); - s->regs[SONIC_TFC] = dp8393x_get(s, width, data, 2); - s->regs[SONIC_TSA0] = dp8393x_get(s, width, data, 3); - s->regs[SONIC_TSA1] = dp8393x_get(s, width, data, 4); - s->regs[SONIC_TFS] = dp8393x_get(s, width, data, 5); + s->regs[SONIC_TCR] = dp8393x_get(s, width, 0) & 0xf000; + s->regs[SONIC_TPS] = dp8393x_get(s, width, 1); + s->regs[SONIC_TFC] = dp8393x_get(s, width, 2); + s->regs[SONIC_TSA0] = dp8393x_get(s, width, 3); + s->regs[SONIC_TSA1] = dp8393x_get(s, width, 4); + s->regs[SONIC_TFS] = dp8393x_get(s, width, 5); /* Handle programmable interrupt */ if (s->regs[SONIC_TCR] & SONIC_TCR_PINT) { @@ -465,10 +461,10 @@ static void dp8393x_do_transmit_packets(dp8393xState *s) size = sizeof(uint16_t) * 3 * width; address_space_rw(&s->as, dp8393x_ttda(s) + sizeof(uint16_t) * (4 + 3 * i) * width, - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0); - s->regs[SONIC_TSA0] = dp8393x_get(s, width, data, 0); - s->regs[SONIC_TSA1] = dp8393x_get(s, width, data, 1); - s->regs[SONIC_TFS] = dp8393x_get(s, width, data, 2); + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 0); + s->regs[SONIC_TSA0] = dp8393x_get(s, width, 0); + s->regs[SONIC_TSA1] = dp8393x_get(s, width, 1); + s->regs[SONIC_TFS] = dp8393x_get(s, width, 2); } } @@ -495,12 +491,12 @@ static void dp8393x_do_transmit_packets(dp8393xState *s) s->regs[SONIC_TCR] |= SONIC_TCR_PTX; /* Write status */ - dp8393x_put(s, width, data, 0, + dp8393x_put(s, width, 0, s->regs[SONIC_TCR] & 0x0fff); /* status */ size = sizeof(uint16_t) * width; address_space_rw(&s->as, dp8393x_ttda(s), - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 1); + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 1); if (!(s->regs[SONIC_CR] & SONIC_CR_HTX)) { /* Read footer of packet */ @@ -509,9 +505,9 @@ static void dp8393x_do_transmit_packets(dp8393xState *s) dp8393x_ttda(s) + sizeof(uint16_t) * (4 + 3 * s->regs[SONIC_TFC]) * width, - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0); - s->regs[SONIC_CTDA] = dp8393x_get(s, width, data, 0) & ~0x1; - if (dp8393x_get(s, width, data, 0) & 0x1) { + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 0); + s->regs[SONIC_CTDA] = dp8393x_get(s, width, 0) & ~0x1; + if (dp8393x_get(s, width, 0) & 0x1) { /* EOL detected */ break; } @@ -748,7 +744,6 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf, size_t size) { dp8393xState *s = qemu_get_nic_opaque(nc); - uint16_t data[10]; int packet_type; uint32_t available, address; int width, rx_len = size; @@ -773,8 +768,8 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf, size = sizeof(uint16_t) * 1 * width; address = dp8393x_crda(s) + sizeof(uint16_t) * 5 * width; address_space_rw(&s->as, address, MEMTXATTRS_UNSPECIFIED, - (uint8_t *)data, size, 0); - if (dp8393x_get(s, width, data, 0) & 0x1) { + (uint8_t *)s->data, size, 0); + if (dp8393x_get(s, width, 0) & 0x1) { /* Still EOL ; stop reception */ return -1; } else { @@ -818,27 +813,27 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf, /* Write status to memory */ DPRINTF("Write status at %08x\n", dp8393x_crda(s)); - dp8393x_put(s, width, data, 0, s->regs[SONIC_RCR]); /* status */ - dp8393x_put(s, width, data, 1, rx_len); /* byte count */ - dp8393x_put(s, width, data, 2, s->regs[SONIC_TRBA0]); /* pkt_ptr0 */ - dp8393x_put(s, width, data, 3, s->regs[SONIC_TRBA1]); /* pkt_ptr1 */ - dp8393x_put(s, width, data, 4, s->regs[SONIC_RSC]); /* seq_no */ + dp8393x_put(s, width, 0, s->regs[SONIC_RCR]); /* status */ + dp8393x_put(s, width, 1, rx_len); /* byte count */ + dp8393x_put(s, width, 2, s->regs[SONIC_TRBA0]); /* pkt_ptr0 */ + dp8393x_put(s, width, 3, s->regs[SONIC_TRBA1]); /* pkt_ptr1 */ + dp8393x_put(s, width, 4, s->regs[SONIC_RSC]); /* seq_no */ size = sizeof(uint16_t) * 5 * width; address_space_rw(&s->as, dp8393x_crda(s), - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 1); + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 1); /* Move to next descriptor */ size = sizeof(uint16_t) * width; address_space_rw(&s->as, dp8393x_crda(s) + sizeof(uint16_t) * 5 * width, - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0); - s->regs[SONIC_LLFA] = dp8393x_get(s, width, data, 0); + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, size, 0); + s->regs[SONIC_LLFA] = dp8393x_get(s, width, 0); if (s->regs[SONIC_LLFA] & 0x1) { /* EOL detected */ s->regs[SONIC_ISR] |= SONIC_ISR_RDE; } else { - dp8393x_put(s, width, data, 0, 0); /* in_use */ + dp8393x_put(s, width, 0, 0); /* in_use */ address_space_rw(&s->as, dp8393x_crda(s) + sizeof(uint16_t) * 6 * width, - MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, sizeof(uint16_t), 1); + MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, sizeof(uint16_t), 1); s->regs[SONIC_CRDA] = s->regs[SONIC_LLFA]; s->regs[SONIC_ISR] |= SONIC_ISR_PKTRX; s->regs[SONIC_RSC] = (s->regs[SONIC_RSC] & 0xff00) | (((s->regs[SONIC_RSC] & 0x00ff) + 1) & 0x00ff); -- cgit v1.2.3 From c744cf78791e7ddc903a46d6506f1a0cbcbb3387 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Wed, 6 Nov 2019 12:23:41 +0100 Subject: dp8393x: fix dp8393x_receive() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RXpkt.in_use is always 16 bit wide, but when the bus access mode is 32bit and the endianness is big, we must access the second word and not the first. This patch adjusts the offset according to the size and endianness. This fixes DHCP for Q800 guest. Fixes: be9208419865 ("dp8393x: manage big endian bus") Signed-off-by: Laurent Vivier Tested-by: Hervé Poussineau Message-Id: <20191106112341.23735-3-laurent@vivier.eu> --- hw/net/dp8393x.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'hw') diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index 85d3f3788e..3d991af163 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -831,9 +831,15 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf, /* EOL detected */ s->regs[SONIC_ISR] |= SONIC_ISR_RDE; } else { - dp8393x_put(s, width, 0, 0); /* in_use */ - address_space_rw(&s->as, dp8393x_crda(s) + sizeof(uint16_t) * 6 * width, - MEMTXATTRS_UNSPECIFIED, (uint8_t *)s->data, sizeof(uint16_t), 1); + /* Clear in_use, but it is always 16bit wide */ + int offset = dp8393x_crda(s) + sizeof(uint16_t) * 6 * width; + if (s->big_endian && width == 2) { + /* we need to adjust the offset of the 16bit field */ + offset += sizeof(uint16_t); + } + s->data[0] = 0; + address_space_rw(&s->as, offset, MEMTXATTRS_UNSPECIFIED, + (uint8_t *)s->data, sizeof(uint16_t), 1); s->regs[SONIC_CRDA] = s->regs[SONIC_LLFA]; s->regs[SONIC_ISR] |= SONIC_ISR_PKTRX; s->regs[SONIC_RSC] = (s->regs[SONIC_RSC] & 0xff00) | (((s->regs[SONIC_RSC] & 0x00ff) + 1) & 0x00ff); -- cgit v1.2.3